kopia lustrzana https://gitlab.com/sane-project/backends
1330 wiersze
32 KiB
C
1330 wiersze
32 KiB
C
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/* sane - Scanner Access Now Easy.
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This file (C) 1997 Ingo Schneider
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This file is part of the SANE package.
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SANE is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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SANE is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with sane; see the file COPYING. If not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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This file implements a SANE backend for Siemens 9036 flatbed scanners. */
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#include <sane/config.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/types.h>
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#ifndef PATH_MAX
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# define PATH_MAX 1024
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#endif
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#include <sane/sane.h>
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#include <sane/sanei.h>
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#include <sane/sanei_config.h>
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#include <sane/saneopts.h>
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#include <sane/sanei_scsi.h>
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#include <s9036.h>
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#define BACKEND_NAME s9036
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#include <sane/sanei_backend.h>
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#define MM_PER_INCH 25.4
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#undef Byte
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#define Byte SANE_Byte
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static int num_devices;
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static S9036_Device *s9036_devices;
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/* sets loc_s bytes long value at offset loc in scsi command to value size */
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static void
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set_size (Byte * loc, int loc_s, size_t size)
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{
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int i;
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for (i = 0; i < loc_s; i++)
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{
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loc[loc_s - i - 1] = (size >> (i * 8)) & 0xff;
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}
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}
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static long
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reserve_unit (int fd)
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{
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const Byte scsi_reserve[] =
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{
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0x16, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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DBG (3, "reserve_unit()\n");
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return sanei_scsi_cmd (fd, scsi_reserve, sizeof (scsi_reserve), 0, 0);
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}
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static long
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release_unit (int fd)
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{
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const Byte scsi_release[] =
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{
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0x17, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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DBG (3, "release_unit()\n");
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return sanei_scsi_cmd (fd, scsi_release, sizeof (scsi_release), 0, 0);
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}
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static SANE_Status
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test_ready (int fd)
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{
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static const Byte scsi_test_ready[] =
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{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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SANE_Status status;
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int try;
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for (try = 0; try < 1000; ++try)
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{
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DBG (3, "test_ready: sending TEST_UNIT_READY\n");
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status = sanei_scsi_cmd (fd, scsi_test_ready, sizeof (scsi_test_ready),
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0, 0);
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switch (status)
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{
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case SANE_STATUS_DEVICE_BUSY:
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usleep (100000); /* retry after 100ms */
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break;
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case SANE_STATUS_GOOD:
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return status;
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default:
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DBG (1, "test_ready: test unit ready failed (%s)\n",
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sane_strstatus (status));
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return status;
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}
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}
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DBG (1, "test_ready: timed out after %d attempts\n", try);
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return SANE_STATUS_IO_ERROR;
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}
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static SANE_Status
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sense_handler (int scsi_fd, u_char *result, void *arg)
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{
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if (result[0])
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{
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DBG (0, "sense_handler() : sense code = %02x\n", result[0]);
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return SANE_STATUS_IO_ERROR;
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}
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else
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{
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return SANE_STATUS_GOOD;
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}
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}
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static SANE_Status
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stop_scan (int fd)
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{
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/* XXX don't know how to stop the scanner. To be tested ! */
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#if 0
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const Byte scsi_rewind[] =
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{
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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DBG (1, "Trying to stop scanner...\n");
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return sanei_scsi_cmd (fd, scsi_rewind, sizeof (scsi_rewind), 0, 0);
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#else
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return SANE_STATUS_GOOD;
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#endif
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}
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static SANE_Status
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start_scan (int fd, SANE_Bool cont)
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{
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struct
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{
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/* Command */
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Byte cmd;
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Byte lun;
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Byte res[2];
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Byte tr_len;
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Byte ctrl;
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/* Data */
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Byte wid;
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}
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scsi_start_scan;
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memset (&scsi_start_scan, 0, sizeof (scsi_start_scan));
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scsi_start_scan.cmd = 0x1b;
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scsi_start_scan.tr_len = 1;
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scsi_start_scan.wid = 0;
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scsi_start_scan.ctrl = (cont == SANE_TRUE) ? 0x80 : 0x00;
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DBG (1, "Starting scanner ...\n");
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return sanei_scsi_cmd (fd, &scsi_start_scan, sizeof (scsi_start_scan), 0, 0);
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}
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static void
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wait_ready (int fd)
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{
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# define WAIT_READY_READ_SIZE 4
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const Byte scsi_read[] =
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{
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0x28, 0x00, /* opcode, lun */
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0x80, /* data type 80 == read time left */
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0x00, 0x00, 0x00, /* reserved */
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0x00, 0x00, WAIT_READY_READ_SIZE, /* transfer length */
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0x00, /* control byte */
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};
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Byte result[WAIT_READY_READ_SIZE];
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size_t size = WAIT_READY_READ_SIZE;
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SANE_Status status;
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while (1)
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{
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status = sanei_scsi_cmd (fd, scsi_read, sizeof (scsi_read),
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result, &size);
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if (status != SANE_STATUS_GOOD || size != WAIT_READY_READ_SIZE)
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{
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/*
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Command failed, the assembler code of the windows scan library
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ignores this condition, and so do I
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*/
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break;
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}
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else
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{
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/* left is the amount of seconds left till the scanner is
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ready * 100 */
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int left = result[2] * 256 + result[3];
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DBG (1, "wait_ready() : %d left...\n", left);
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if (!left)
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break;
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/* We delay only for half the given time */
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else if (left < 200)
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usleep (left * 5000);
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else
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sleep (left / 200);
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}
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}
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return;
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}
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static SANE_Status
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get_read_sizes (int fd, int *lines_available, int *bpl, int *total_lines)
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{
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# define GET_READ_SIZES_READ_SIZE 24
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const Byte scsi_read[] =
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{
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0x28, 0x00, /* opcode, lun */
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0x81, /* data type 81 == read time left */
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0x00, 0x00, 0x00, /* reserved */
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0x00, 0x00, GET_READ_SIZES_READ_SIZE, /* transfer length */
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0x00, /* control byte */
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};
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Byte result[GET_READ_SIZES_READ_SIZE];
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size_t size = GET_READ_SIZES_READ_SIZE;
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SANE_Status status;
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status = sanei_scsi_cmd (fd, scsi_read, sizeof (scsi_read), result, &size);
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if (status != SANE_STATUS_GOOD || size != GET_READ_SIZES_READ_SIZE)
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{
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/* Command failed */
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return SANE_STATUS_IO_ERROR;
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}
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else
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{
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*lines_available = result[14] * 256 + result[15];
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*bpl = result[12] * 256 + result[13];
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if (total_lines)
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*total_lines = result[10] * 256 + result[11];
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}
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DBG (1, "get_read_sizes() : %d of %d, %d\n",
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*lines_available, total_lines ? *total_lines : -1, *bpl);
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return SANE_STATUS_GOOD;
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}
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static SANE_Status
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set_window (S9036_Scanner * s)
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/* This function sets and sends the window for scanning */
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{
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double pixels_per_mm = (double) s->val[OPT_RESOLUTION] / MM_PER_INCH;
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SANE_Bool auto_bright = !(s->opt[OPT_BRIGHT_ADJUST].cap & SANE_CAP_INACTIVE);
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SANE_Bool auto_contr = !(s->opt[OPT_CONTR_ADJUST].cap & SANE_CAP_INACTIVE);
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/* ranges down 255 (dark) down to 1(bright) */
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int brightness = auto_bright ? 0 : (SANE_UNFIX (s->val[OPT_BRIGHTNESS])
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* -1.27 + 128.5);
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/* ranges from 1 (little contrast) up to 255 (much contrast) */
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int contrast = auto_contr ? 0 : (SANE_UNFIX (s->val[OPT_CONTRAST])
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* 1.27 + 128.5);
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/* ranges from 40 (dark) down to 0 (bright) */
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int bright_adjust = auto_bright ? 20 - s->val[OPT_BRIGHT_ADJUST] : 0;
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/* ranges from 20 (little contrast) down to -20 = 235 (much contrast) */
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int contr_adjust = auto_contr ? (256 - s->val[OPT_CONTR_ADJUST]) % 256 : 0;
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/* Warning ! The following structur SEEMS to be an valid SCSI-2
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SET_WINDOW command. But e.g. the limits for the window are only
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2 Bytes instead of 4. The scanner was built at about 1990, so
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SCSI-2 wasn't available for development...
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*/
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struct
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{
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Byte cmd;
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Byte lun;
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Byte re1[4];
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Byte tr_len[3];
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Byte ctrl;
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Byte re2[6];
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Byte wd_len[2];
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struct
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{
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Byte wid;
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Byte autobit;
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Byte x_axis_res[2];
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Byte y_axis_res[2];
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Byte x_axis_ul[2];
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Byte y_axis_ul[2];
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Byte wwidth[2];
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Byte wlength[2];
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Byte contrast;
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Byte threshold;
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Byte brightness;
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Byte image_comp;
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Byte bpp;
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Byte ht_pattern;
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Byte rif_padding;
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Byte three;
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Byte null1[2];
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Byte null2[8];
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Byte null_eins;
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Byte eins_null;
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Byte contr_adjust;
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Byte bright_adjust;
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Byte null3;
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}
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wd;
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}
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cmd;
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DBG (3,
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"Setting parameters: bpp %d, res %d, bri %d, con %d, bad %d, cad %d\n",
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s->val[OPT_DEPTH], s->val[OPT_RESOLUTION],
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brightness, contrast, bright_adjust, contr_adjust);
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memset (&cmd, 0, sizeof (cmd));
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/* Commands and sizes. Original comment in German: Kommando und Groessen. */
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cmd.cmd = 0x24;
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set_size (cmd.tr_len, 3, 37 + 8);
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set_size (cmd.wd_len, 2, 37);
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/* Resolution. Original comment in German: Aufloesung */
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set_size (cmd.wd.x_axis_res, 2, s->val[OPT_RESOLUTION]);
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set_size (cmd.wd.y_axis_res, 2, s->val[OPT_RESOLUTION]);
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/* Scan window position/size. Original comment in German:
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Fensterposition / Groesse */
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set_size (cmd.wd.x_axis_ul, 2,
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SANE_UNFIX (s->val[OPT_TL_X]) * pixels_per_mm + 0.5);
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set_size (cmd.wd.y_axis_ul, 2,
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SANE_UNFIX (s->val[OPT_TL_Y]) * pixels_per_mm + 0.5);
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set_size (cmd.wd.wwidth, 2, SANE_UNFIX (s->val[OPT_BR_X] - s->val[OPT_TL_X])
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* pixels_per_mm + 0.5);
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set_size (cmd.wd.wlength, 2, SANE_UNFIX (s->val[OPT_BR_Y] - s->val[OPT_TL_Y])
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* pixels_per_mm + 0.5);
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cmd.wd.contrast = contrast;
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cmd.wd.threshold = 0x00;
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cmd.wd.brightness = brightness;
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cmd.wd.image_comp = (s->val[OPT_DEPTH] == 1) ? 0 : 2;
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cmd.wd.bpp = s->val[OPT_DEPTH];
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cmd.wd.ht_pattern = 0;
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cmd.wd.rif_padding = 0x00;
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cmd.wd.three = 3;
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cmd.wd.null_eins = (s->val[OPT_DEPTH] == 1) ? 0 : 1;
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cmd.wd.eins_null = (s->val[OPT_DEPTH] == 1) ? 1 : 0;
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cmd.wd.contr_adjust = contr_adjust;
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cmd.wd.bright_adjust = bright_adjust;
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return sanei_scsi_cmd (s->fd, &cmd, sizeof (cmd), 0, 0);
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}
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/* Tell scanner to scan more data. Original comment in German:
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Fordert Scanner auf, weiter zu scannen... */
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static SANE_Status
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request_more_data (S9036_Scanner * s)
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{
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SANE_Status status;
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int lines_available;
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int bytes_per_line;
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status = start_scan (s->fd, SANE_TRUE);
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if (status != SANE_STATUS_GOOD)
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return status;
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wait_ready (s->fd);
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status = get_read_sizes (s->fd, &lines_available, &bytes_per_line, 0);
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if (!lines_available || bytes_per_line != s->params.bytes_per_line)
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{
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return SANE_STATUS_INVAL;
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}
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if (s->lines_read + lines_available > s->params.lines)
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return SANE_STATUS_INVAL;
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s->lines_in_scanner = lines_available;
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return SANE_STATUS_GOOD;
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}
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/* May only be called when there is at least one row of data to
|
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be read.
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Original comment in German: Darf nur aufgerufen werden, wenn
|
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wirklich noch Zeilen zu scannen/lesen sind ! */
|
||
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static SANE_Status
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read_more_data (S9036_Scanner * s)
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||
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{
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|
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static Byte cmd[] =
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{
|
||
|
0x28, 0x00, /* opcode, lun */
|
||
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0x00, /* data type 80 == read time left */
|
||
|
0x00, 0x00, 0x00, /* reserved */
|
||
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0x00, 0x00, 0x00, /* transfer length */
|
||
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0x00, /* control byte */
|
||
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};
|
||
|
|
||
|
SANE_Status status;
|
||
|
size_t size;
|
||
|
int lines_read;
|
||
|
int bpl = s->params.bytes_per_line;
|
||
|
int i;
|
||
|
|
||
|
if (s->lines_in_scanner == 0)
|
||
|
{
|
||
|
/* No lines in scanner ? scan some more */
|
||
|
status = request_more_data (s);
|
||
|
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
return status;
|
||
|
|
||
|
}
|
||
|
|
||
|
/* We try this 3 times */
|
||
|
while (1)
|
||
|
{
|
||
|
|
||
|
/* Request as much lines as would fit into the buffer ... */
|
||
|
lines_read = s->bufsize / bpl;
|
||
|
|
||
|
/* buffer is too small for one line: we can't handle this */
|
||
|
if (!lines_read)
|
||
|
return SANE_STATUS_INVAL;
|
||
|
|
||
|
/* We only request as many lines as there are already scanned */
|
||
|
if (lines_read > s->lines_in_scanner)
|
||
|
lines_read = s->lines_in_scanner;
|
||
|
|
||
|
set_size (&cmd[6], 3, lines_read);
|
||
|
size = lines_read * s->params.bytes_per_line;
|
||
|
|
||
|
DBG (1, "Requesting %d lines, in scanner: %d, total: %d\n", lines_read,
|
||
|
s->lines_in_scanner, s->params.lines);
|
||
|
|
||
|
status = sanei_scsi_cmd (s->fd, cmd, sizeof (cmd), s->buffer, &size);
|
||
|
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
if (s->bufsize > 4096)
|
||
|
{
|
||
|
DBG (1, "sanei_scsi_cmd(): using 4k buffer\n");
|
||
|
s->bufsize = 4096;
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
DBG (1, "sanei_scsi_cmd() = %d\n", status);
|
||
|
return SANE_STATUS_IO_ERROR;
|
||
|
}
|
||
|
|
||
|
if (size != lines_read * s->params.bytes_per_line)
|
||
|
{
|
||
|
DBG (1, "sanei_scsi_cmd(): got %lu bytes, expected %d\n",
|
||
|
(u_long) size, lines_read * s->params.bytes_per_line);
|
||
|
return SANE_STATUS_INVAL;
|
||
|
}
|
||
|
|
||
|
DBG (1, "Got %lu bytes\n", (u_long) size);
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
|
||
|
/* Reverse: */
|
||
|
if (s->params.depth != 1)
|
||
|
for (i = 0; i < size; i++)
|
||
|
s->buffer[i] = (255 - s->buffer[i]);
|
||
|
|
||
|
s->in_buffer += size;
|
||
|
s->lines_in_scanner -= lines_read;
|
||
|
s->lines_read += lines_read;
|
||
|
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
|
||
|
static SANE_Status
|
||
|
attach (const char *devname, S9036_Device ** devp)
|
||
|
{
|
||
|
#define ATTACH_SCSI_INQ_LEN 55
|
||
|
const Byte scsi_inquiry[] =
|
||
|
{
|
||
|
0x12, 0x00, 0x00, 0x00, ATTACH_SCSI_INQ_LEN, 0x00
|
||
|
};
|
||
|
Byte result[ATTACH_SCSI_INQ_LEN];
|
||
|
|
||
|
int fd;
|
||
|
S9036_Device *dev;
|
||
|
SANE_Status status;
|
||
|
size_t size;
|
||
|
int i;
|
||
|
|
||
|
for (dev = s9036_devices; dev; dev = dev->next)
|
||
|
if (strcmp (dev->sane.name, devname) == 0)
|
||
|
{
|
||
|
if (devp)
|
||
|
*devp = dev;
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
DBG (3, "attach: opening %s\n", devname);
|
||
|
status = sanei_scsi_open (devname, &fd, sense_handler, 0);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
DBG (1, "attach: open failed (%s)\n", sane_strstatus (status));
|
||
|
return SANE_STATUS_INVAL;
|
||
|
}
|
||
|
|
||
|
DBG (3, "attach: sending INQUIRY\n");
|
||
|
size = sizeof (result);
|
||
|
status = sanei_scsi_cmd (fd, scsi_inquiry, sizeof (scsi_inquiry),
|
||
|
result, &size);
|
||
|
if (status != SANE_STATUS_GOOD || size != ATTACH_SCSI_INQ_LEN)
|
||
|
{
|
||
|
DBG (1, "attach: inquiry failed (%s)\n", sane_strstatus (status));
|
||
|
sanei_scsi_close (fd);
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
status = test_ready (fd);
|
||
|
sanei_scsi_close (fd);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
return status;
|
||
|
|
||
|
/* The structure send by the scanner after inquiry is not SCSI-2
|
||
|
compatible. The standard manufacturer/model fields are no ASCII
|
||
|
strings, but ? At offset 36 my SIEMENS scanner identifies as an
|
||
|
AGFA one ?! */
|
||
|
|
||
|
if (result[0] != 6 || strncmp (result + 36, "AGFA03", 6))
|
||
|
{
|
||
|
DBG (1, "attach: device doesn't look like a Siemens 9036 scanner\n");
|
||
|
return SANE_STATUS_INVAL;
|
||
|
}
|
||
|
|
||
|
DBG (3, "Inquiry data:\n");
|
||
|
for (i = 5; i < 55; i += 10)
|
||
|
DBG (3, "%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
|
||
|
result[i], result[i + 1], result[i + 2], result[i + 3], result[i + 4],
|
||
|
result[i + 5], result[i + 6], result[i + 7], result[i + 8],
|
||
|
result[i + 9]);
|
||
|
|
||
|
dev = malloc (sizeof (*dev));
|
||
|
|
||
|
if (!dev)
|
||
|
return SANE_STATUS_NO_MEM;
|
||
|
|
||
|
memset (dev, 0, sizeof (*dev));
|
||
|
|
||
|
dev->sane.name = strdup (devname);
|
||
|
dev->sane.vendor = "Siemens";
|
||
|
dev->sane.model = "9036";
|
||
|
dev->sane.type = "flatbed scanner";
|
||
|
|
||
|
dev->handle = 0;
|
||
|
|
||
|
DBG (3, "attach: found S9036 scanner model\n");
|
||
|
|
||
|
++num_devices;
|
||
|
dev->next = s9036_devices;
|
||
|
s9036_devices = dev;
|
||
|
|
||
|
if (devp)
|
||
|
*devp = dev;
|
||
|
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
static SANE_Status
|
||
|
do_cancel (S9036_Scanner * s)
|
||
|
{
|
||
|
s->scanning = SANE_FALSE;
|
||
|
|
||
|
if (s->fd >= 0)
|
||
|
{
|
||
|
stop_scan (s->fd);
|
||
|
release_unit (s->fd);
|
||
|
sanei_scsi_close (s->fd);
|
||
|
s->fd = -1;
|
||
|
}
|
||
|
|
||
|
if (s->buffer)
|
||
|
{
|
||
|
free (s->buffer);
|
||
|
s->buffer = 0;
|
||
|
}
|
||
|
|
||
|
return SANE_STATUS_CANCELLED;
|
||
|
}
|
||
|
|
||
|
|
||
|
static SANE_Status
|
||
|
init_options (S9036_Scanner * s)
|
||
|
{
|
||
|
int i;
|
||
|
|
||
|
/* Hardware Limitations: must be static ! */
|
||
|
static const SANE_Int depth_list[] =
|
||
|
{2, 1, 8};
|
||
|
|
||
|
static const SANE_Int dpi_list[] =
|
||
|
{8, 100, 200, 300, 400, 500, 600, 700, 800};
|
||
|
|
||
|
static const SANE_Range percentage_range =
|
||
|
{
|
||
|
-100 << SANE_FIXED_SCALE_SHIFT, /* minimum */
|
||
|
100 << SANE_FIXED_SCALE_SHIFT, /* maximum */
|
||
|
1 << SANE_FIXED_SCALE_SHIFT /* quantization */
|
||
|
};
|
||
|
|
||
|
static const SANE_Range automatic_adjust_range =
|
||
|
{-20, 20, 1};
|
||
|
|
||
|
static const SANE_Range x_range =
|
||
|
{0, SANE_FIX (8.27 * MM_PER_INCH), 0};
|
||
|
static const SANE_Range y_range =
|
||
|
{0, SANE_FIX (12.72 * MM_PER_INCH), 0};
|
||
|
|
||
|
/* ------ */
|
||
|
|
||
|
memset (s->opt, 0, sizeof (s->opt));
|
||
|
memset (s->val, 0, sizeof (s->val));
|
||
|
|
||
|
for (i = 0; i < NUM_OPTIONS; ++i)
|
||
|
{
|
||
|
s->opt[i].size = sizeof (SANE_Word);
|
||
|
s->opt[i].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
|
||
|
}
|
||
|
|
||
|
s->opt[OPT_NUM_OPTS].title = SANE_TITLE_NUM_OPTIONS;
|
||
|
s->opt[OPT_NUM_OPTS].desc = SANE_DESC_NUM_OPTIONS;
|
||
|
s->opt[OPT_NUM_OPTS].cap = SANE_CAP_SOFT_DETECT;
|
||
|
s->val[OPT_NUM_OPTS] = NUM_OPTIONS;
|
||
|
|
||
|
/* "Mode" group: */
|
||
|
|
||
|
s->opt[OPT_MODE_GROUP].title = "Scan Mode";
|
||
|
s->opt[OPT_MODE_GROUP].desc = "";
|
||
|
s->opt[OPT_MODE_GROUP].type = SANE_TYPE_GROUP;
|
||
|
s->opt[OPT_MODE_GROUP].cap = 0;
|
||
|
s->opt[OPT_MODE_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
|
||
|
|
||
|
/* depth */
|
||
|
s->opt[OPT_DEPTH].name = SANE_NAME_BIT_DEPTH;
|
||
|
s->opt[OPT_DEPTH].title = SANE_TITLE_BIT_DEPTH;
|
||
|
s->opt[OPT_DEPTH].desc = SANE_DESC_BIT_DEPTH;
|
||
|
s->opt[OPT_DEPTH].type = SANE_TYPE_INT;
|
||
|
s->opt[OPT_DEPTH].unit = SANE_UNIT_BIT;
|
||
|
s->opt[OPT_DEPTH].constraint_type = SANE_CONSTRAINT_WORD_LIST;
|
||
|
s->opt[OPT_DEPTH].constraint.word_list = depth_list;
|
||
|
s->val[OPT_DEPTH] = 1;
|
||
|
|
||
|
/* resolution */
|
||
|
s->opt[OPT_RESOLUTION].name = SANE_NAME_SCAN_RESOLUTION;
|
||
|
s->opt[OPT_RESOLUTION].title = SANE_TITLE_SCAN_RESOLUTION;
|
||
|
s->opt[OPT_RESOLUTION].desc = SANE_DESC_SCAN_RESOLUTION;
|
||
|
s->opt[OPT_RESOLUTION].type = SANE_TYPE_INT;
|
||
|
s->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI;
|
||
|
s->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_WORD_LIST;
|
||
|
s->opt[OPT_RESOLUTION].constraint.word_list = dpi_list;
|
||
|
s->val[OPT_RESOLUTION] = 100;
|
||
|
|
||
|
/* "Geometry" group: */
|
||
|
s->opt[OPT_GEOMETRY_GROUP].title = "Geometry";
|
||
|
s->opt[OPT_GEOMETRY_GROUP].desc = "";
|
||
|
s->opt[OPT_GEOMETRY_GROUP].type = SANE_TYPE_GROUP;
|
||
|
s->opt[OPT_GEOMETRY_GROUP].cap = SANE_CAP_ADVANCED;
|
||
|
s->opt[OPT_GEOMETRY_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
|
||
|
|
||
|
/* top-left x */
|
||
|
s->opt[OPT_TL_X].name = SANE_NAME_SCAN_TL_X;
|
||
|
s->opt[OPT_TL_X].title = SANE_TITLE_SCAN_TL_X;
|
||
|
s->opt[OPT_TL_X].desc = SANE_DESC_SCAN_TL_X;
|
||
|
s->opt[OPT_TL_X].type = SANE_TYPE_FIXED;
|
||
|
s->opt[OPT_TL_X].unit = SANE_UNIT_MM;
|
||
|
s->opt[OPT_TL_X].constraint_type = SANE_CONSTRAINT_RANGE;
|
||
|
s->opt[OPT_TL_X].constraint.range = &x_range;
|
||
|
s->val[OPT_TL_X] = 0;
|
||
|
|
||
|
/* top-left y */
|
||
|
s->opt[OPT_TL_Y].name = SANE_NAME_SCAN_TL_Y;
|
||
|
s->opt[OPT_TL_Y].title = SANE_TITLE_SCAN_TL_Y;
|
||
|
s->opt[OPT_TL_Y].desc = SANE_DESC_SCAN_TL_Y;
|
||
|
s->opt[OPT_TL_Y].type = SANE_TYPE_FIXED;
|
||
|
s->opt[OPT_TL_Y].unit = SANE_UNIT_MM;
|
||
|
s->opt[OPT_TL_Y].constraint_type = SANE_CONSTRAINT_RANGE;
|
||
|
s->opt[OPT_TL_Y].constraint.range = &y_range;
|
||
|
s->val[OPT_TL_Y] = 0;
|
||
|
|
||
|
/* bottom-right x */
|
||
|
s->opt[OPT_BR_X].name = SANE_NAME_SCAN_BR_X;
|
||
|
s->opt[OPT_BR_X].title = SANE_TITLE_SCAN_BR_X;
|
||
|
s->opt[OPT_BR_X].desc = SANE_DESC_SCAN_BR_X;
|
||
|
s->opt[OPT_BR_X].type = SANE_TYPE_FIXED;
|
||
|
s->opt[OPT_BR_X].unit = SANE_UNIT_MM;
|
||
|
s->opt[OPT_BR_X].constraint_type = SANE_CONSTRAINT_RANGE;
|
||
|
s->opt[OPT_BR_X].constraint.range = &x_range;
|
||
|
s->val[OPT_BR_X] = x_range.max;
|
||
|
|
||
|
/* bottom-right y */
|
||
|
s->opt[OPT_BR_Y].name = SANE_NAME_SCAN_BR_Y;
|
||
|
s->opt[OPT_BR_Y].title = SANE_TITLE_SCAN_BR_Y;
|
||
|
s->opt[OPT_BR_Y].desc = SANE_DESC_SCAN_BR_Y;
|
||
|
s->opt[OPT_BR_Y].type = SANE_TYPE_FIXED;
|
||
|
s->opt[OPT_BR_Y].unit = SANE_UNIT_MM;
|
||
|
s->opt[OPT_BR_Y].constraint_type = SANE_CONSTRAINT_RANGE;
|
||
|
s->opt[OPT_BR_Y].constraint.range = &y_range;
|
||
|
s->val[OPT_BR_Y] = y_range.max;
|
||
|
|
||
|
/* "Enhancement" group: */
|
||
|
s->opt[OPT_ENHANCEMENT_GROUP].title = "Enhancement";
|
||
|
s->opt[OPT_ENHANCEMENT_GROUP].desc = "";
|
||
|
s->opt[OPT_ENHANCEMENT_GROUP].type = SANE_TYPE_GROUP;
|
||
|
s->opt[OPT_ENHANCEMENT_GROUP].cap = 0;
|
||
|
s->opt[OPT_ENHANCEMENT_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
|
||
|
|
||
|
/* brightness */
|
||
|
s->opt[OPT_BRIGHTNESS].name = SANE_NAME_BRIGHTNESS;
|
||
|
s->opt[OPT_BRIGHTNESS].title = SANE_TITLE_BRIGHTNESS;
|
||
|
s->opt[OPT_BRIGHTNESS].desc = SANE_DESC_BRIGHTNESS;
|
||
|
s->opt[OPT_BRIGHTNESS].type = SANE_TYPE_FIXED;
|
||
|
s->opt[OPT_BRIGHTNESS].cap |= SANE_CAP_AUTOMATIC;
|
||
|
s->opt[OPT_BRIGHTNESS].unit = SANE_UNIT_PERCENT;
|
||
|
s->opt[OPT_BRIGHTNESS].constraint_type = SANE_CONSTRAINT_RANGE;
|
||
|
s->opt[OPT_BRIGHTNESS].constraint.range = &percentage_range;
|
||
|
s->val[OPT_BRIGHTNESS] = 0;
|
||
|
|
||
|
/* contrast */
|
||
|
s->opt[OPT_CONTRAST].name = SANE_NAME_CONTRAST;
|
||
|
s->opt[OPT_CONTRAST].title = SANE_TITLE_CONTRAST;
|
||
|
s->opt[OPT_CONTRAST].desc = SANE_DESC_CONTRAST;
|
||
|
s->opt[OPT_CONTRAST].type = SANE_TYPE_FIXED;
|
||
|
s->opt[OPT_CONTRAST].cap |= SANE_CAP_AUTOMATIC;
|
||
|
s->opt[OPT_CONTRAST].unit = SANE_UNIT_PERCENT;
|
||
|
s->opt[OPT_CONTRAST].constraint_type = SANE_CONSTRAINT_RANGE;
|
||
|
s->opt[OPT_CONTRAST].constraint.range = &percentage_range;
|
||
|
s->val[OPT_CONTRAST] = 0;
|
||
|
|
||
|
/* brightness automatic correct */
|
||
|
s->opt[OPT_BRIGHT_ADJUST].name = "adjust-bright";
|
||
|
s->opt[OPT_BRIGHT_ADJUST].title = "Automatic brightness adjust";
|
||
|
s->opt[OPT_BRIGHT_ADJUST].desc = "Controls the automatic brightness of the "
|
||
|
"acquired image. This option is active for automatic brightness only.";
|
||
|
s->opt[OPT_BRIGHT_ADJUST].type = SANE_TYPE_INT;
|
||
|
s->opt[OPT_BRIGHT_ADJUST].cap |= SANE_CAP_INACTIVE;
|
||
|
s->opt[OPT_BRIGHT_ADJUST].unit = SANE_UNIT_NONE;
|
||
|
s->opt[OPT_BRIGHT_ADJUST].constraint_type = SANE_CONSTRAINT_RANGE;
|
||
|
s->opt[OPT_BRIGHT_ADJUST].constraint.range = &automatic_adjust_range;
|
||
|
s->val[OPT_BRIGHT_ADJUST] = 0;
|
||
|
|
||
|
/* contrast automatic correct */
|
||
|
s->opt[OPT_CONTR_ADJUST].name = "adjust-contr";
|
||
|
s->opt[OPT_CONTR_ADJUST].title = "Automatic contrast adjust";
|
||
|
s->opt[OPT_CONTR_ADJUST].desc = "Controls the automatic contrast of the "
|
||
|
" acquired image. This option is active for automatic contrast only.";
|
||
|
s->opt[OPT_CONTR_ADJUST].type = SANE_TYPE_INT;
|
||
|
s->opt[OPT_CONTR_ADJUST].cap |= SANE_CAP_INACTIVE;
|
||
|
s->opt[OPT_CONTR_ADJUST].unit = SANE_UNIT_NONE;
|
||
|
s->opt[OPT_CONTR_ADJUST].constraint_type = SANE_CONSTRAINT_RANGE;
|
||
|
s->opt[OPT_CONTR_ADJUST].constraint.range = &automatic_adjust_range;
|
||
|
s->val[OPT_CONTR_ADJUST] = 0;
|
||
|
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
static SANE_Status
|
||
|
attach_one (const char *dev)
|
||
|
{
|
||
|
attach (dev, 0);
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
SANE_Status
|
||
|
sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize)
|
||
|
{
|
||
|
char dev_name[PATH_MAX];
|
||
|
size_t len;
|
||
|
FILE *fp;
|
||
|
|
||
|
DBG_INIT ();
|
||
|
|
||
|
if (version_code)
|
||
|
*version_code = SANE_VERSION_CODE (V_MAJOR, V_MINOR, 0);
|
||
|
|
||
|
fp = sanei_config_open ("s9036.conf");
|
||
|
if (!fp)
|
||
|
{
|
||
|
/* default to /dev/scanner instead of insisting on config file */
|
||
|
attach ("/dev/scanner", 0);
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
while (fgets (dev_name, sizeof (dev_name), fp))
|
||
|
{
|
||
|
if (dev_name[0] == '#') /* ignore line comments */
|
||
|
continue;
|
||
|
len = strlen (dev_name);
|
||
|
if (dev_name[len - 1] == '\n')
|
||
|
dev_name[--len] = '\0';
|
||
|
|
||
|
if (!len)
|
||
|
continue; /* ignore empty lines */
|
||
|
|
||
|
sanei_config_attach_matching_devices (dev_name, attach_one);
|
||
|
}
|
||
|
fclose (fp);
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
sane_exit (void)
|
||
|
{
|
||
|
S9036_Device *dev, *next;
|
||
|
|
||
|
for (dev = s9036_devices; dev; dev = next)
|
||
|
{
|
||
|
next = dev->next;
|
||
|
if (dev->handle)
|
||
|
sane_close (dev->handle);
|
||
|
free (dev);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
SANE_Status
|
||
|
sane_get_devices (const SANE_Device *** device_list, SANE_Bool local_only)
|
||
|
{
|
||
|
static const SANE_Device **devlist = 0;
|
||
|
S9036_Device *dev;
|
||
|
int i;
|
||
|
|
||
|
if (devlist)
|
||
|
free (devlist);
|
||
|
|
||
|
devlist = malloc ((num_devices + 1) * sizeof (devlist[0]));
|
||
|
if (!devlist)
|
||
|
return SANE_STATUS_NO_MEM;
|
||
|
|
||
|
for (dev = s9036_devices, i = 0; i < num_devices; dev = dev->next)
|
||
|
devlist[i++] = &dev->sane;
|
||
|
devlist[i++] = 0;
|
||
|
|
||
|
*device_list = devlist;
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
SANE_Status
|
||
|
sane_open (SANE_String_Const devicename, SANE_Handle * handle)
|
||
|
{
|
||
|
S9036_Device *dev;
|
||
|
SANE_Status status;
|
||
|
S9036_Scanner *s;
|
||
|
|
||
|
if (devicename[0])
|
||
|
{
|
||
|
status = attach (devicename, &dev);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
return status;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
/* empty devicname -> use first device */
|
||
|
dev = s9036_devices;
|
||
|
}
|
||
|
|
||
|
if (!dev)
|
||
|
return SANE_STATUS_INVAL;
|
||
|
|
||
|
if (dev->handle)
|
||
|
return SANE_STATUS_DEVICE_BUSY;
|
||
|
|
||
|
s = malloc (sizeof (*s));
|
||
|
if (!s)
|
||
|
return SANE_STATUS_NO_MEM;
|
||
|
|
||
|
memset (s, 0, sizeof (*s));
|
||
|
s->scanning = SANE_FALSE;
|
||
|
s->fd = -1;
|
||
|
s->hw = dev;
|
||
|
s->hw->handle = s;
|
||
|
|
||
|
init_options (s);
|
||
|
|
||
|
*handle = s;
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
sane_close (SANE_Handle handle)
|
||
|
{
|
||
|
S9036_Scanner *s = handle;
|
||
|
|
||
|
if (s->scanning)
|
||
|
do_cancel (handle);
|
||
|
|
||
|
s->hw->handle = 0;
|
||
|
|
||
|
free (handle);
|
||
|
}
|
||
|
|
||
|
const SANE_Option_Descriptor *
|
||
|
sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
|
||
|
{
|
||
|
S9036_Scanner *s = handle;
|
||
|
|
||
|
if ((unsigned) option >= NUM_OPTIONS)
|
||
|
return 0;
|
||
|
return s->opt + option;
|
||
|
}
|
||
|
|
||
|
SANE_Status
|
||
|
sane_control_option (SANE_Handle handle, SANE_Int option,
|
||
|
SANE_Action action, void *val, SANE_Int * info)
|
||
|
{
|
||
|
S9036_Scanner *s = handle;
|
||
|
SANE_Status status;
|
||
|
|
||
|
if (info)
|
||
|
*info = 0;
|
||
|
|
||
|
if (s->scanning)
|
||
|
return SANE_STATUS_DEVICE_BUSY;
|
||
|
|
||
|
if (option >= NUM_OPTIONS || !SANE_OPTION_IS_ACTIVE (s->opt[option].cap))
|
||
|
return SANE_STATUS_UNSUPPORTED;
|
||
|
|
||
|
if (action == SANE_ACTION_GET_VALUE)
|
||
|
{
|
||
|
|
||
|
switch (option)
|
||
|
{
|
||
|
case OPT_DEPTH:
|
||
|
case OPT_RESOLUTION:
|
||
|
case OPT_TL_X:
|
||
|
case OPT_TL_Y:
|
||
|
case OPT_BR_X:
|
||
|
case OPT_BR_Y:
|
||
|
case OPT_NUM_OPTS:
|
||
|
case OPT_BRIGHTNESS:
|
||
|
case OPT_CONTRAST:
|
||
|
case OPT_BRIGHT_ADJUST:
|
||
|
case OPT_CONTR_ADJUST:
|
||
|
*(SANE_Word *) val = s->val[option];
|
||
|
break;
|
||
|
default:
|
||
|
return SANE_STATUS_UNSUPPORTED;
|
||
|
}
|
||
|
|
||
|
}
|
||
|
else if (action == SANE_ACTION_SET_VALUE)
|
||
|
{
|
||
|
|
||
|
if (!SANE_OPTION_IS_SETTABLE (s->opt[option].cap))
|
||
|
return SANE_STATUS_UNSUPPORTED;
|
||
|
|
||
|
status = sanei_constrain_value (s->opt + option, val, info);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
return status;
|
||
|
|
||
|
switch (option)
|
||
|
{
|
||
|
case OPT_DEPTH:
|
||
|
case OPT_RESOLUTION:
|
||
|
case OPT_TL_X:
|
||
|
case OPT_TL_Y:
|
||
|
case OPT_BR_X:
|
||
|
case OPT_BR_Y:
|
||
|
if (info)
|
||
|
*info |= SANE_INFO_RELOAD_PARAMS;
|
||
|
case OPT_BRIGHT_ADJUST:
|
||
|
case OPT_CONTR_ADJUST:
|
||
|
s->val[option] = *(SANE_Word *) val;
|
||
|
break;
|
||
|
case OPT_BRIGHTNESS:
|
||
|
if (SANE_OPTION_IS_ACTIVE (s->opt[OPT_BRIGHT_ADJUST].cap))
|
||
|
{
|
||
|
s->opt[OPT_BRIGHT_ADJUST].cap |= SANE_CAP_INACTIVE;
|
||
|
if (info)
|
||
|
*info |= SANE_INFO_RELOAD_OPTIONS;
|
||
|
}
|
||
|
s->val[option] = *(SANE_Word *) val;
|
||
|
break;
|
||
|
case OPT_CONTRAST:
|
||
|
if (SANE_OPTION_IS_ACTIVE (s->opt[OPT_CONTR_ADJUST].cap))
|
||
|
{
|
||
|
s->opt[OPT_CONTR_ADJUST].cap |= SANE_CAP_INACTIVE;
|
||
|
if (info)
|
||
|
*info |= SANE_INFO_RELOAD_OPTIONS;
|
||
|
}
|
||
|
s->val[option] = *(SANE_Word *) val;
|
||
|
break;
|
||
|
default:
|
||
|
return SANE_STATUS_UNSUPPORTED;
|
||
|
}
|
||
|
|
||
|
}
|
||
|
else if (action == SANE_ACTION_SET_AUTO)
|
||
|
{
|
||
|
|
||
|
if (!SANE_OPTION_IS_SETTABLE (s->opt[option].cap))
|
||
|
return SANE_STATUS_UNSUPPORTED;
|
||
|
|
||
|
switch (option)
|
||
|
{
|
||
|
case OPT_BRIGHTNESS:
|
||
|
if (!SANE_OPTION_IS_ACTIVE (s->opt[OPT_BRIGHT_ADJUST].cap))
|
||
|
{
|
||
|
s->opt[OPT_BRIGHT_ADJUST].cap &= ~SANE_CAP_INACTIVE;
|
||
|
if (info)
|
||
|
*info |= SANE_INFO_RELOAD_OPTIONS;
|
||
|
}
|
||
|
break;
|
||
|
case OPT_CONTRAST:
|
||
|
if (!SANE_OPTION_IS_ACTIVE (s->opt[OPT_CONTR_ADJUST].cap))
|
||
|
{
|
||
|
s->opt[OPT_CONTR_ADJUST].cap &= ~SANE_CAP_INACTIVE;
|
||
|
if (info)
|
||
|
*info |= SANE_INFO_RELOAD_OPTIONS;
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
return SANE_STATUS_UNSUPPORTED;
|
||
|
}
|
||
|
|
||
|
}
|
||
|
else
|
||
|
return SANE_STATUS_UNSUPPORTED;
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
SANE_Status
|
||
|
sane_get_parameters (SANE_Handle handle, SANE_Parameters * params)
|
||
|
{
|
||
|
S9036_Scanner *s = handle;
|
||
|
|
||
|
if (!s->scanning)
|
||
|
{
|
||
|
double width, height, dpi;
|
||
|
|
||
|
memset (&s->params, 0, sizeof (s->params));
|
||
|
|
||
|
s->params.format = SANE_FRAME_GRAY;
|
||
|
s->params.last_frame = SANE_TRUE;
|
||
|
|
||
|
s->params.depth = s->val[OPT_DEPTH];
|
||
|
|
||
|
width = SANE_UNFIX (s->val[OPT_BR_X] - s->val[OPT_TL_X]);
|
||
|
height = SANE_UNFIX (s->val[OPT_BR_Y] - s->val[OPT_TL_Y]);
|
||
|
dpi = s->val[OPT_RESOLUTION];
|
||
|
|
||
|
/* make best-effort guess at what parameters will look like once
|
||
|
scanning starts. */
|
||
|
if (dpi > 0.0 && width > 0.0 && height > 0.0)
|
||
|
{
|
||
|
double dots_per_mm = dpi / MM_PER_INCH;
|
||
|
|
||
|
s->params.pixels_per_line = width * dots_per_mm + 0.5;
|
||
|
s->params.lines = height * dots_per_mm + 0.5;
|
||
|
}
|
||
|
|
||
|
s->params.bytes_per_line =
|
||
|
(s->params.pixels_per_line + (8 - s->params.depth))
|
||
|
/ (8 / s->params.depth);
|
||
|
}
|
||
|
|
||
|
if (params)
|
||
|
*params = s->params;
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
SANE_Status
|
||
|
sane_start (SANE_Handle handle)
|
||
|
{
|
||
|
S9036_Scanner *s = handle;
|
||
|
SANE_Status status;
|
||
|
|
||
|
if (s->scanning)
|
||
|
do_cancel (s);
|
||
|
|
||
|
/* First make sure we have a current parameter set. Some of the
|
||
|
parameters will be overwritten below, but that's OK. */
|
||
|
status = sane_get_parameters (s, 0);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
return status;
|
||
|
|
||
|
if (s->fd < 0)
|
||
|
{
|
||
|
status = sanei_scsi_open (s->hw->sane.name, &s->fd, sense_handler, 0);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
DBG (1, "open: open of %s failed: %s\n",
|
||
|
s->hw->sane.name, sane_strstatus (status));
|
||
|
s->fd = -1;
|
||
|
return status;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
status = test_ready (s->fd);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
DBG (1, "open: test_ready() failed: %s\n", sane_strstatus (status));
|
||
|
sanei_scsi_close (s->fd);
|
||
|
s->fd = -1;
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
status = reserve_unit (s->fd);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
DBG (1, "open: reserve_unit() failed: %s\n", sane_strstatus (status));
|
||
|
sanei_scsi_close (s->fd);
|
||
|
s->fd = -1;
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
status = set_window (s);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
DBG (1, "open: set_window() failed: %s\n", sane_strstatus (status));
|
||
|
release_unit (s->fd);
|
||
|
sanei_scsi_close (s->fd);
|
||
|
s->fd = -1;
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
s->scanning = SANE_TRUE;
|
||
|
|
||
|
status = start_scan (s->fd, SANE_FALSE);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
DBG (1, "open: start_scan() failed: %s\n", sane_strstatus (status));
|
||
|
do_cancel (s);
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
wait_ready (s->fd);
|
||
|
|
||
|
{
|
||
|
int lines_available = 0, bytes_per_line = 0, total_lines = 0;
|
||
|
|
||
|
status = get_read_sizes (s->fd, &lines_available, &bytes_per_line,
|
||
|
&total_lines);
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
DBG (1, "open: get_read_sizes() failed: %s\n",
|
||
|
sane_strstatus (status));
|
||
|
do_cancel (s);
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
if (!lines_available || !bytes_per_line || !total_lines)
|
||
|
{
|
||
|
DBG (1, "open: invalid_sizes(): %d, %d, %d\n",
|
||
|
lines_available, bytes_per_line, total_lines);
|
||
|
do_cancel (s);
|
||
|
return SANE_STATUS_INVAL;
|
||
|
}
|
||
|
|
||
|
s->params.lines = total_lines;
|
||
|
s->params.bytes_per_line = bytes_per_line;
|
||
|
s->params.pixels_per_line = bytes_per_line * (8 / s->params.depth);
|
||
|
|
||
|
s->lines_in_scanner = lines_available;
|
||
|
s->lines_read = 0;
|
||
|
|
||
|
/* Buffer must be at least 4k */
|
||
|
s->bufsize = (sanei_scsi_max_request_size < 4096) ?
|
||
|
4096 : sanei_scsi_max_request_size;
|
||
|
|
||
|
s->buffer = (Byte *) malloc (s->bufsize * sizeof (Byte));
|
||
|
|
||
|
if (!s->buffer)
|
||
|
{
|
||
|
DBG (1, "open malloc(%lu) failed.\n", (u_long) s->bufsize);
|
||
|
do_cancel (s);
|
||
|
return SANE_STATUS_NO_MEM;
|
||
|
}
|
||
|
s->bufstart = s->buffer;
|
||
|
s->in_buffer = 0;
|
||
|
}
|
||
|
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
copy_buffer (S9036_Scanner * s, SANE_Byte ** buf, SANE_Int * max_len,
|
||
|
SANE_Int * len)
|
||
|
{
|
||
|
if (*max_len > s->in_buffer)
|
||
|
{
|
||
|
memcpy (*buf, s->bufstart, s->in_buffer);
|
||
|
*buf += s->in_buffer;
|
||
|
*len += s->in_buffer;
|
||
|
*max_len -= s->in_buffer;
|
||
|
|
||
|
s->bufstart = s->buffer;
|
||
|
s->in_buffer = 0;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
memcpy (*buf, s->bufstart, *max_len);
|
||
|
s->bufstart += *max_len;
|
||
|
s->in_buffer -= *max_len;
|
||
|
|
||
|
*buf += *max_len;
|
||
|
*len += *max_len;
|
||
|
*max_len = 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
SANE_Status
|
||
|
sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len,
|
||
|
SANE_Int * len)
|
||
|
{
|
||
|
S9036_Scanner *s = handle;
|
||
|
SANE_Status status;
|
||
|
|
||
|
if (s->scanning != SANE_TRUE || max_len == 0)
|
||
|
return SANE_STATUS_INVAL;
|
||
|
|
||
|
*len = 0;
|
||
|
|
||
|
DBG (3, "sane_read(%d) : lines_read %d\n", max_len, s->lines_read);
|
||
|
|
||
|
while (max_len > s->in_buffer && s->lines_read < s->params.lines)
|
||
|
{
|
||
|
|
||
|
if (s->in_buffer == 0)
|
||
|
{
|
||
|
status = read_more_data (s);
|
||
|
|
||
|
if (status != SANE_STATUS_GOOD)
|
||
|
{
|
||
|
DBG (1, "sane_read: read_more_data() failed (%s)\n",
|
||
|
sane_strstatus (status));
|
||
|
do_cancel (s);
|
||
|
return status;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
copy_buffer (s, &buf, &max_len, len);
|
||
|
|
||
|
if (!max_len || s->lines_read >= s->params.lines)
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
/* If we reached this point, there are either enough bytes in the buffer,
|
||
|
or, if the buffer is empty, we already reached the end of the page */
|
||
|
|
||
|
if (s->in_buffer > 0)
|
||
|
{
|
||
|
copy_buffer (s, &buf, &max_len, len);
|
||
|
return SANE_STATUS_GOOD;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
do_cancel (s);
|
||
|
DBG (1, "EOF\n");
|
||
|
return SANE_STATUS_EOF;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
sane_cancel (SANE_Handle handle)
|
||
|
{
|
||
|
S9036_Scanner *s = handle;
|
||
|
do_cancel (s);
|
||
|
}
|
||
|
|
||
|
SANE_Status
|
||
|
sane_set_io_mode (SANE_Handle handle, SANE_Bool non_blocking)
|
||
|
{
|
||
|
DBG (1, "sane_set_io_mode(%d)\n", non_blocking);
|
||
|
|
||
|
return (non_blocking == SANE_TRUE) ?
|
||
|
SANE_STATUS_UNSUPPORTED : SANE_STATUS_GOOD;
|
||
|
}
|
||
|
|
||
|
SANE_Status
|
||
|
sane_get_select_fd (SANE_Handle handle, SANE_Int * fd)
|
||
|
{
|
||
|
return SANE_STATUS_UNSUPPORTED;
|
||
|
}
|